Service Bulletin BULLETIN NO : SBMA200314 BULLETIN TO : MARINE DEALERS DATE : September 2003 SUBJECT : BF50 A4 engine stall / Hesitation during acceleration. Symptom During acceleration, the engine can ran poorly or stall between the 2000rpm ~ 3000 rpm range. Cause The height of the air bleed hole in the slow jet pipe was incorrect; the air-fuel mixture would lean- out when accelerating between 2000- 3000 rpm. This causes the engine to hesitate or stall. Corrective Action Remove the #42 jet in the carburetor. Once the #45 jet (part number 16150-ZW4-H02) has been fitted, re-assemble as per shop manual NOTE; Don’t forget to balance the carburetors after the upgrade.
Replacement SLOW JET PIPE part number – 16150-ZW4-H02, order 3 pieces per outboard. Note; new manifold gaskets may be required. The numbers circled below refer to the numbers on the warranty claim form. When completing your warranty claim, make sure the information in the following warranty claim field is the same as shown below. All other fields (boxes) must be completed as per normal. 13 Fault code – 091 14 F.R.T.- 1.4 19 Main Casual Part – 16150-ZW4-000 20 QTY - 0 BRUCE BUTT National Service Manager PLEASE ENSURE ALL RELEVANT STAFF ARE AWARE OF THIS BULLETIN AND ITS CONTENTS AND SIGN BELOW. ........................ ........................ ..............................
.......................... SERVICE MANAGER PARTS MANAGER SALES MANAGER DEALER